Department of Biology, Hillsdale College, 33 East College Street, Hillsdale, MI 49242, USA..
Zootaxa. 2021 Apr 28;4965(2):293300. doi: 10.11646/zootaxa.4965.2.4.
Setodes truncatus n. sp. is illustrated and described herein based on specimens collected from 2 adjacent watersheds of the Huron Mountains in northern Michigan (USA). Both known populations inhabit undisturbed sandy rivers. Males of S. truncatus appear most similar to those of S. incertus (Walker) but can be separated based on their short and truncate inferior appendages and by other differences in the genitalia. The larva and female both remain unknown. A revised key to males of the 10 North American species of Setodes is provided.
本文基于在美国密歇根州北部休伦山脉的 2 个相邻流域采集的标本，对截断溪蟹（Setodes truncatus n. sp.）进行了描述和说明。这两个已知种群都栖息在未受干扰的沙质河流中。截断溪蟹雄蟹与无齿溪蟹（Walker）最为相似，但可以通过其短而截短的下附肢以及生殖器的其他差异来区分。幼虫和雌蟹均未知。提供了北美 10 种截溪蟹雄蟹修订的关键特征。
